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dian zu kang xi tong zhong tong shi duo pin ji li xin hao de shi xian
Author(s): 
Pages: 1333-1334+1347
Year: Issue:  5
Journal: Computer Measurement & Control

Keyword:  bio-impedancediscrete walsh functionsmulti-frequency-one-time(MFOT) excitation signalFPGA;
Abstract: 为实现在同一时间内对生物体不同组织、器官阻抗的测量,提出一种基于Hadamard序的离散Walsh函数实现同时多频激励信号的方法;利用Hadamard矩阵函数生成离散Hadamard序的Walsh函数,根据Walsh函数不同序之间的转换关系,合成多频激励信号f(K,t)的离散序列,并在CycloneII EP2C35F672C6 FPGA上实现周期f(7,t)输出;实验结果表明,该合成方法具有开发时间短、编程量小和通用性好的优势,便于用FPGA生成具有不同谐波个数的同时多频激励信号。
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